diff --git a/build.rs b/build.rs
index bc00f6d..312bbd8 100644
--- a/build.rs
+++ b/build.rs
@@ -1,8 +1,8 @@
-use std::env;
 use std::fs::File;
 use std::path::PathBuf;
 
-const RUNTIME_SNAPSHOT_PATH: &str = concat!(env!("CARGO_MANIFEST_DIR"), "/target/RUNTIME_SNAPSHOT.bin");
+const RUNTIME_SNAPSHOT_PATH: Option<&str> = option_env!("RUNTIME_SNAPSHOT_PATH");
+const DEFAULT_SNAPSHOT_PATH: &str = "/tmp/openworkers-runtime-snapshot.bin";
 
 fn main () {
     println!("cargo:rerun-if-changed=build.rs");
@@ -10,10 +10,10 @@ fn main () {
     println!("cargo:rerun-if-changed=src/runtime.rs");
     println!("cargo:rerun-if-changed=src/extensions.rs");
     
-    let path = PathBuf::from(RUNTIME_SNAPSHOT_PATH);
+    let path = PathBuf::from(RUNTIME_SNAPSHOT_PATH.unwrap_or(DEFAULT_SNAPSHOT_PATH));
 
     // Create the file if it doesn't exist
     if !path.exists() {
         File::create(&path).unwrap();
     }
-}
\ No newline at end of file
+}
diff --git a/src/snapshot.rs b/src/snapshot.rs
index 1a42553..646f66f 100644
--- a/src/snapshot.rs
+++ b/src/snapshot.rs
@@ -9,13 +9,14 @@ use std::env;
 use std::path::PathBuf;
 use std::fs::File;
 
-const RUNTIME_SNAPSHOT_PATH: &str = concat!(env!("CARGO_MANIFEST_DIR"), "/target/RUNTIME_SNAPSHOT.bin");
+const RUNTIME_SNAPSHOT_PATH: Option<&str> = option_env!("RUNTIME_SNAPSHOT_PATH");
+const DEFAULT_SNAPSHOT_PATH: &str = "/tmp/openworkers-runtime-snapshot.bin";
 
 pub fn create_runtime_snapshot() {
     println!("Building snapshot");
 
     // Build the file path to the snapshot.
-    let snapshot_path = PathBuf::from(RUNTIME_SNAPSHOT_PATH);
+    let snapshot_path = PathBuf::from(RUNTIME_SNAPSHOT_PATH.unwrap_or(DEFAULT_SNAPSHOT_PATH));
 
     let serializer: SnapshotFileSerializer = SnapshotFileSerializer::new(File::create(snapshot_path).unwrap());